No default, and it is the only question in the script like that. A guessed
default is right often enough to be trusted and wrong in exactly the case that
costs the most — pinning a static IP on a rented box, or leaving the firewall
open on one. Every branch downstream is about what this machine is exposed to,
so it is worth one deliberate keystroke rather than an Enter.
Empty and unrecognised answers re-ask rather than aborting; a failed read means
EOF rather than a wrong answer, and fails with the environment variable named,
because otherwise the loop spins forever the first time this runs unattended.
Drops guess_machine_role, which existed only to supply that default. default_iface
stays — the static IP section needs it when it is ported.
MACHINE_ROLE in the environment still answers it ahead of time.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
pastilhasandClaude Opus 5
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